Hemigordiellina, Marie, 1961

Vachard, D, Krainer, K & Lucas, SG, 2015, Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA), Palaeontologia Electronica (English ed.) 3 (8), pp. 1-77 : 44

Hemigordiellina ? cf. simplex ( Harlton, 1928)

Figures 22.11 , 33.1-33.14, 33.16, 33.18

? 1928 Glomospira simplex Harlton , p. 305, pl. 52, fig. 2a-c.

v. 2013 b Hemigordiellina ? cf. simplex (Harlton) ; Vachard, Krainer and Lucas, p. 348 (no illustration).

Description. This taxon is characterised by a large proloculus, a thin wall, high lumina and an evolute last whorl. D = 0.14-0.43 mm; whorls: 3-4; p = 0.01-

0.04 mm; h = 0.03-0.06 mm; s = 0.01 mm.

Comparison. Due to the evolute, plane last whorl, this taxon is transitional with Hoyenella Rettori, 1994 (if this Triassic genus possesses a porcelaneous wall, as we suppose). It differs from true H. simplex and from Hemigordiellina nanzhangensis (Zhang and Lin in Lin, 1978) n. comb. by its larger size.

Occurrence. Middle? Kungurian (late Leonardian) of New Mexico (San Andres Fm: samples MLY 3-1, MLY 3-11, MLY(2) 4-1, MLY(2) 4-2, MLY 4-8, MLY 4-11, MLY 4-12, MLY(2) 4-13, MLY 4-15, MLY 4-16, MLY 4-18, MLY 4-19, MLY 4-20, MLY 4-21, MLY(2) 5-1, MLY(2) 5-3, MLY(2) 5-4, MLY 5-5, MLY 5-12, MLY 5-15, MLY 5-16a, MLY 5-17, MLY 5-21, MLY(2) 5a-8, MLY 6-25a, MLY 8-7).

Figures

FIGURE 22. 1, 3. Glomomidiella infrapermica n. sp. 1. NMMNH P-67600, holotype. Subtransverse section. Yeso Group. Sample MG 10-22. 3. NMMNH P-67601, paratype. Subtransverse section. Yeso Group. Sample MG 10-25. 2. Orthovertellopsis proteaeformis n. gen. n. sp., NMMNH P-67570, holotype. Axial section with relatively well-preserved wall. Yeso Group. Sample MG 10-21. 4, 7-8, 10, 12-14. Praeneodiscus convexus n. gen. n. sp. 4. NMMNH P-67606, holotype. Axial section. Yeso Group. Sample MG 10-24. 7. NMMNH P-67607, paratype. Axial section. San Andres Fm. Sample MLY 5-13 (already illustrated in Brose et al., 2013, figure 6. 11). 8. NMMNH P-67608, paratype. Axial section. San Andres Fm. Sample MLY 5-4. 10. NMMNH P-67609, paratype. Axial section with a relatively preserved wall. San Andres Fm. Sample MLY 5-7. 12. NMMNH P-67610, paratype. Axial section. San Andres Fm. Sample MLY 5-7a. 13. NMMNH P-67611, paratype. Axial section. San Andres Fm. Sample MLY 5-30. 14. NMMNH P-67612, paratype. Axial section. San Andres Fm. Sample MLY 5-21. 5. Tubiphytes epimonellaeformis n.sp. Subtransverse section. San Andres Fm. Sample SAR 8a-22. 6. Globivalvulina parapiciformis n. sp. NMMNH P-67551, holotype. Transverse section. San Andres Fm. Sample MLY 4-3. 9. Pseudospira aff. ishimbaica (Lipina, 1949). Subtransverse section. Yeso Group. Sample MG 10-26. 11. Hemigordiellina? cf. simplex (Harlton, 1928). Axial section. San Andres Fm. Sample MLY 6-28. 15. Eotuberitina reitlingerae Miklukho-Maklay, 1958. Axial section. San Andres Fm. Sample MLY 4-5. Scale bars equal 0.10 mm.

FIGURE 33. 1-14, 16, 18. Hemigordiellina? cf. simplex (Harlton, 1928). 1. Oblique subtransverse section. San Andres Fm. Sample MLY 3-1. 2. Oblique subaxial section. San Andres Fm. Sample MLY 3-11. 3. Subtransverse section. San Andres Fm. Sample MLY 4-8. 4. Subaxial section. San Andres Fm. Sample MLY 4-11. 5. Transverse section. San Andres Fm. Sample MLY 4-15. 6. Subtransverse section. San Andres Fm. Sample MLY 4-16. 7. Transverse section. San Andres Fm. Sample MLY 4-18. 8. Subaxial section. San Andres Fm. Sample MLY 4-19. 9. Subtransverse section. San Andres Fm. Sample MLY 8-7. 10. Subtransverse section. San Andres Fm. Sample MLY 4-20. 11. Subtransverse section. San Andres Fm. Sample MLY 5-15. 12. Subaxial section. San Andres Fm. Sample MLY 5-16a. 13. Transverse section. San Andres Fm. Sample MLY 5-5. 14. Subtranverse section. San Andres Fm. Sample MLY 4-12. 16. Oblique section. San Andres Fm. Sample MLY 6-25a. 18. Transverse section. San Andres Fm. Sample MLY 4-21. 15, 21. Pseudospira aff. ishimbaica (Lipina, 1949). 15. Subaxial section. San Andres Fm. Sample MLY 6-22. 21. Axial section with Hemigordiellina? cf. simplex (left). San Andres Fm. Sample MLY 5-17. 17, 22, 26. Praeneodiscus convexus n. gen. n. sp. 17. Oblique section. San Andres Fm. Sample MLY 5-16. 22. Transverse section. San Andres Fm. Sample MLY 5-8a. 26. Subaxial section. San Andres Fm. Sample MLY 5-9. 19-20. Orthovertellopsis protaeformis n. gen. n. sp. 19. Subaxial section. San Andres Fm. Sample MLY 6-5. 20. Oblique subaxial section. San Andres Fm. Sample MLY 6-5a. 23-24. Hemigordiellina? aff. pseudopusilla (Baryshnikov in Zolotova and Baryshnikov, 1980). 23. Oblique section. San Andres Fm. Sample MLY 5-25. 24. Axial section. San Andres Fm. Sample MLY 5-24. 25. Palaeonubecularia? sp. Axial section. Perhaps also related with Ellesmerella (see Vachard et al., 2013b). San Andres Fm. Sample MLY 5-29. Scale bars equal 0.10 mm.